Tire with oxygen scavenging barrier

Abstract

The present invention provides a tire comprising a polyester copolymer, the polyester copolymer comprising predominantly polyester segments and an oxygen scavenging amount of polyolefin oligomer segments.

1 . A pneumatic tire comprising at least one oxygen scavenging barrier, the barrier comprising a polyester copolymer, said polyester copolymer comprising a copolycondensate of a polyester and a polyolefin oligomer.  
   
   
       2 . The tire of  claim 1 , wherein said polyester is selected from polyethylene terephthalate, polybutylene terephthalate, polybutylene terephthalate elastomer, amorphous polyesters, polycyclohexane terephthalate, polyethylene naphthalate, and polybutylene naphthalate.  
   
   
       3 . The pneumatic tire of  claim 1 , wherein said polyolefin oligomer is selected from the group consisting of polyolefin and polydienes.  
   
   
       4 . The pneumatic tire of  claim 1 , wherein said polyolefin oligomer is selected from the group consisting of polypropylene, poly(4-methyl)1-pentene and polybutadiene.  
   
   
       5 . The pneumatic tire of  claim 1 , wherein polyolefin oligomer segments of said polycondensate comprise from about 0.5 weight percent to about 12 weight percent based on the weight of the copolycondensate.  
   
   
       6 . The pneumatic tire of  claim 1 , wherein polyolefin oligomer segments of said polycondensate comprise from about 2 weight percent to about 8 weight percent based on the weight of the copolycondensate.  
   
   
       7 . The pneumatic tire of  claim 1 , wherein polyolefin oligomer segments of said polycondensate comprise from about 2 weight percent to about 6 weight percent based on weight of the copolycondensate.  
   
   
       8 . The pneumatic tire of  claim 1 , wherein said polyolefin oligomer has a molecular weight ranging from 100 to 10,000.  
   
   
       9 . The tire of  claim 1 , wherein said oxygen scavenging barrier is disposed as a layer laminated over a belt edge of said tire.  
   
   
       10 . The tire of  claim 1 , wherein said oxygen scavenging barrier is disposed as a layer laminated over a carcass ply end of said tire.  
   
   
       11 . The tire of  claim 1 , wherein said oxygen scavenging barrier is disposed as a layer in a multi-layer innerliner of said tire.  
   
   
       12 . The tire of  claim 1 , wherein said oxygen scavenging barrier is disposed as a layer in a sidewall of said tire.  
   
   
       13 . The tire of  claim 1 , wherein said oxygen scavenging barrier is disposed as a plurality of layers in an innerliner of said tire.  
   
   
       14 . The tire of  claim 1 , wherein said oxygen scavenging barrier is disposed as a plurality of layers in a sidewall of said tire.  
   
   
       15 . The tire of  claim 1 , wherein said oxygen scavenging barrier further comprises from 10 to 2000 ppm of a transition metal catalyst.  
   
   
       16 . The tire of  claim 1 , wherein said oxygen scavenging barrier further comprises from 10 to 2000 ppm of a transition metal catalyst selected from cobalt catalysts, iron catalysts, and manganese catalysts.